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  1. Member
    Join Date: Dec 2003
    Location: United States
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    Someone educate me here. I have this option in Pinnacle Studio 9 in the make disc section. Will either do a better job quality-wise? I am looking for the best quality. Constant bitrate or varible bitrate
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  2. Member bugster's Avatar
    Join Date: Jan 2002
    Location: UK
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    It comes down to playing time, quality required, type of material and a host of other factors.

    If your required playing time is short enough to encode at a highish bitrate with CBR then you might as well use CBR. If your playing time is over 75 mins or so, then using a VBR type encode will generally give you a higher quality final product than a lowr bitrate CBR because it will allocate higher bitrate where required such as high motion scenes.
    There are 10 kinds of people in this world. Those that understand binary...
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  3. Originally Posted by bugster
    If your playing time is over 75 mins or so, then using a VBR type encode will generally give you a higher quality final product than a lowr bitrate CBR because it will allocate higher bitrate where required such as high motion scenes.
    You mean "than the same bitrate CBR"
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  4. Member bugster's Avatar
    Join Date: Jan 2002
    Location: UK
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    Originally Posted by jagabo
    Originally Posted by bugster
    If your playing time is over 75 mins or so, then using a VBR type encode will generally give you a higher quality final product than a lowr bitrate CBR because it will allocate higher bitrate where required such as high motion scenes.
    You mean "than the same bitrate CBR"
    Not really what I meant. If the playing time is longer, you have to use a lower bitrate for CBR than you would for a shorter playing time. With VBR you use a lower average bitrate, thats true, but the encoder allocates higher bitrates where most needed, thus the final quality is generally better.

    As an example, CBR 5000Kb/s Vs VBR average bitrate 5000Kb/s, max 9000kb/s. The VBR will usually be better quality.

    But CBR 8000kb/s Vs VBR average 8000kb/s, max 9000kb/s, you will probably not notice the difference.
    There are 10 kinds of people in this world. Those that understand binary...
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  5. Bugster, that's much clearer.
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